Italian National Research Council Earth and Environment ...€¦ · Papua New Guinea Guatemala Portugal China France Ethiopia Germany Austria Australia Thailand MW Italy is a geothermal

Italian National Research Council – Earth and Environment Department, Institute of Geosciences and Earth Resources

Geological data for geothermal evaluation:

Italy

Adele Manzella


Geothermal power production:

8,5 % world’s power production, 1,9 % national power need 25 % Tuscany power need

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Italy is a geothermal country


• Larderello and Travale/Radicondoli are two parts of the same field, covering a huge area of approximately 400 km2, producing super-heated steam at a pressure of 2 MPa and temperature in the range 150–270 °C. At Larderello, the exploited area is 250 km2, with 22 units for a total of 594 MW installed capacity; the Travale/Radicondoli, covers a surface of 50 km2, and the installed capacity is 160 MW (6 units). The most explopited are now the deep reservoirs, with pressure of 6–7 MPa and temperature of 300–350 °C, at depth of 3000–4000 m

• Mount Amiata area includes two water dominated geothermal fields: Piancastagnaio and Bagnore. In both the fields a deep water dominated resource has been discovered under the shallow one, with a pressure of 20 MPa and a temperature around 300 °C. Presently, there are 5 units with 88 MW of installed capacity: one in Bagnore and four in Piancastagnaio.

• Projects for a further 112 MW have been approved and will be developed in the coming years: new plants in Larderello/Travale, Bagnore and Piancastagnaio, with a net increase of 80 MW (including the decommissioning of some older units).

From Bertani, 2011


Concessions Exploration permit Request for expl. p.

Heat flow map (mW/m2)

There is a growing interest for geothermal, testified by the high number of requests for exploration projects. Most of them are located in the high heat flow areas where hydrothermal systems are expected.

Proposed research projects: • in the volcanic area of Campi

Flegrei (Naples) to evaluate the possibility of supercritical fluid utilization.

• In southern Tyrrenian Sea, Marsili project, to exploit a huge volcanic complex


• A: areas where at least one aquifer, at depth < 3 km, has temperature > 150°C

• B: areas where at least one aquifer, at depth < 3 km, has temperature in the range 150 – 90 °C

• C: areas where at least one aquifer, at depth < 3 km, has temperature in the range 90 – 30 °C

• D: areas with only minor aquifers and, however, for depth < 3km, temperature < 150°C.

A

C

B

D

The inventory of geothermal resources was performed by CNR, ENEA, ENEL and ENI, under Law No 896 of 1986. It resulted in maps and reports. The Geothermal Ranking was based on temperature and fluid availability


Italian Geothermal DB webGIS Criteria for classification E.g., criteria for magmatic or supercritical fluid favourability: • Active volcanic and magmatic systems E.g., criteria for geopressurized favourability: • Foreland areas • Large thickness We need a better estimate

3200 well data 590 spring data


The Italian Geothermal database The Italian National Geothermal Database was built in 1993 by the International Institute for Geothermal Research in Pisa (currently IGG, Institute of Geosciences and Earth Resources) of the National Research Council (C.N.R.) as completion of the Inventory of geothermal resources by CNR, ENEA, ENEL and ENI, under Law No 896 of 1986. Data have been continuosly updated until 2001. During 2008, a software and data update have been implemented with the help and technical support of ENI Refining & Marketing, R & S managment and in collaboration with CEGL and UNMIG (Ufficio Nazionale Minerario per gli Idrocarburi e le Georisorse – National Office for Mining Hydrocarbons and Earth Resources) department of the National Economic Development Ministry, who guaranteed the access to a new dataset. The upgrade has produced one of the most complete underground data repository at the national level.


The data contained in the database currently include:

• identification and location of wells and springs (available)

• temperature and depth (in progress)

• temperature gradient and heat flow

• litho-stratigraphic column of the wells (in progress)

• characteristics of the reservoir

• well production

• chemical, physical and isotopic data of water and gas

• well’s technical profile

• correlation between vertical and deviated well

• permeability

• mineralizations in the well


http://geothopica.igg.cnr.it

3435 well data 590 spring data

Geothopica webportal The project name is inspired from the greek: Geo - γεω indicates the Earth, Th draws heat (thalpos - θάλπος), and topos - τόπος marks the place. Currently, Geothopica (http://geothopica.igg.cnr.it) is a webportal including a webgis that allows the use of BDNG data by means of maps ensuring different kind of data access on the base of data and user typologies. It is possible to browse the temperature map at various depths, and the heat flow map for the whole italian national territory. Also the location and all the relevant data pertaining to the location of the “geothermal objects” are available (i.e. geothermal wells, geothermal springs, etc).

WEBMAPPING

Features and high speed

DB and geoDB interface

Standard OGC (WMS-WFS-WCS)

Dott. Geol. Eugenio Trumpy – IGG - CNR

BDNG Stratigraphic column Webmapping tools

Dott. Geol. Eugenio Trumpy – IGG - CNR

Temperature graphics


Supporting sustainable development of geothermal power production in the

southern italian regions

WP

Atlas of GS and UGS similar to those provided in other countries

Realization of Data Centers

Evaluation of environmental issues and ways of reduction

Information, promotion and training

EGS; Geopressurized systems; Magmatic systems; Supercritical fluid conditions

ATLAS of conventional and unconventional geothermal resurces

in the italian southern regions

Consiglio Nazionale delle Ricerche

Dipartimento Terra e Ambiente

Evaluation of Geothermal Potential for the regiOni ConveRgenza

An Agreement between the Ministry of Ecnomic Development and CNR, funded in the frame of POI for RES, targeting at development of geothermal demonstration projects (power production and direct uses)

Regional and local assessment, pre-feasibility and fesibility studies, economic feasibility, cogeneration, hybrid plant proposals, information.


• basin layout and sediment-basement interface depth (basin contour, sediment thickness

• outlinesand thickness of granitic-crystalline formations

E.g., Top of carbonatic platform, structural models and maps from various authors Gravimetric and magnetic data


Hydrogeological maps: shallow and deep hydrogeological units They often lack deep characterization ISPRA (shallow aquifer), universities (fragmented data), Regions, interregional bodies


On GeoThopica we can check the main hydrogeological units


ISPRA (Italian National Institute for Environmental Protection and Research) has developed the ITHACA project (ITaly HAzard from CApable faults)


Protected areas: various sources In coordination with Regions


Thank you

Our experience for data sources: CNR ISPRA (geological survey) INGV (seismological and volcanological data) Universities Regions UNMIG Other data: ENI (seismic profile, gravimetric and magnetic data)

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Italian National Research Council Earth and Environment ...€¦ · Papua New Guinea Guatemala Portugal China France Ethiopia Germany Austria Australia Thailand MW Italy is a geothermal